JP2857163B2 - Method and apparatus for transporting and winding metal ribbon - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention conveys, for example, a thin metal ribbon produced by rapid cooling and solidification of a molten metal on a peripheral surface of a cooling drum from a cooling drum to a winding drum. The present invention relates to a conveying method, a conveying device, a winding method, and a winding device used for winding on a winding drum.

[Conventional technology]

For example, as a method of directly casting a thin metal ribbon from a molten metal, a single-drum method, a twin-drum method, and the like are known.
In this method, the molten metal flowing down on the peripheral surface of the cooling drum rotating at a high speed is rapidly cooled and solidified by heat removal through the cooling drum to form an amorphous or microcrystalline metal ribbon.

In the production of this type of metal ribbon, generally, when the molten metal is caused to flow down from the pouring nozzle to the peripheral surface of the cooling drum, the molten metal or the produced metal ribbon is rotated around the cooling drum in a certain angle range. Attach to the surface and rotate with the cooling drum. However, the metal ribbon is cooled by the cooling drum, receives centrifugal force from the cooling drum rotating at a high speed of, for example, a peripheral speed of 15 to 40 m / sec, peels off from the peripheral surface of the cooling drum, and becomes amorphous or fine. It is sent to the transport path as a crystalline metal ribbon.

The position at which the metal ribbon is separated from the cooling drum varies depending on the number of rotations of the cooling drum, the composition of the molten metal, the material and the rotation conditions of the cooling drum, the temperature, the atmosphere gas, and the like. In addition, the shape of the metal ribbon fed from the cooling drum at a high speed is extremely unstable, and the tip shape is irregular. It is very difficult to catch the irregular tip of the metal ribbon fed at a high speed in this way, and to automatically wind the metal ribbon on the winding drum in an orderly manner. Unwinding and rewinding took a considerable amount of manpower to take up the coil.

However, such a winding method has low productivity. For example, a metal ribbon cast by a single-drum method or a twin-drum method is extremely thin, having a thickness of 20 to 100 μm, and has a relatively narrow plate width (usually 300 mm or less), so that it is very long. For this reason, rewinding such a thin metal ribbon into a coil from a poor winding state requires a long time and is a bottleneck for lowering the productivity of the casting method itself. In addition, when unraveling or rewinding a metal ribbon, it is likely to bend, break, etc.
It also causes the yield to decrease.

Therefore, in order to produce a large amount of metal ribbon on an industrial scale, it is necessary to develop a high-speed winding device provided with a mechanism for capturing the leading end of the metal ribbon and guiding it to the winding drum. In order to meet this demand, a suction winding method using a magnet (Japanese Patent Laid-Open No. 55-36029), a mechanical gripping method having a mechanism for gripping the tip of a metal ribbon and guiding it to a predetermined position (Japanese Patent Application Laid-Open No. No. 53-24961), a reduced pressure adsorption method in which a metal ribbon is adsorbed on the peripheral surface of a take-up drum whose pressure is reduced (JP-A-55-156646, JP-A-57-94455), and many others. A method has been proposed.

[Problems to be solved by the invention]

The method of winding a metal ribbon on a winding drum by the magnetic attraction described above is based on the premise that the metal ribbon to be wound is a ferromagnetic material, and a metal ribbon exhibiting properties such as weak magnetism and non-magnetism. Not suitable for Further, the mechanical gripping method or the vacuum suction method has a problem in that the reliability is uncertain, and if the capture of the first winding of the drum fails, the casting itself must be stopped.

The present invention can be applied not only to ferromagnetic metal ribbons but also to other metal ribbons. The metal ribbons can be guided smoothly, automatically and without any damage by a simple structure, and transported or wound. The purpose is to:

[Means for solving the problem]

According to a first aspect of the present invention, a plurality of driving rotors having contacts are arranged along the circumference of a winding drum made of a thin metal ribbon in a plurality of rows along a circumferential direction of the winding drum, and the contacts of the rotating bodies adjacent to each other are arranged. Are disposed so as to overlap in the axial direction of the rotating body, the peripheral speed of the contact is higher than the running speed of the metal ribbon, and the contact is brought into rotational contact with the metal ribbon to guide the metal ribbon. This is a method for winding a metal ribbon, which is characterized by winding.

According to a second aspect of the present invention, a plurality of driving rotators having contacts arranged in an axial direction are arranged on a peripheral surface of a winding drum for winding a metal ribbon, and the contacts of the adjacent rotators are arranged in a row. A winding device for a metal ribbon, which is disposed so as to overlap in the axial direction of the rotating body.

According to a third aspect of the present invention, in the second aspect of the present invention, the driving rotary body is disposed so as to be able to advance and retreat with respect to the winding drum.

Furthermore, a fourth invention is a metal ribbon conveying surface extending from the cooling drum to a winding drum, the peripheral surface being downstream from a casting position of a cooling drum for producing a metal ribbon by quenching and solidifying a molten metal. And a plurality of driving rotators having contacts are arranged along the outer peripheral surface of the winding drum, and the respective contacts of the adjacent rotators are arranged so as to overlap in the axial direction of the rotator. This is a device for transporting and winding a metal ribbon.

[Action]

FIG. 1 is a view for explaining the action of a rotating body provided with contacts used in the present invention on a metal ribbon. The metal ribbon 1 travels in the direction indicated by the arrow P. A plurality of rotating bodies 2 a, 2 b, 3 a, 3 b with a driving device are arranged in the transport direction of the metal ribbon 1 on both sides of the metal ribbon 1 along the transport path of the metal ribbon 1. The rotating bodies 2a, 2b arranged on the lower side are rotated in the direction opposite to the rotating direction of the rotating bodies 3a, 3b arranged on the upper side, and the peripheral speed of each rotating body 2a, 2b, 3a, 3b is adjusted. Is made larger than the traveling speed of the metal ribbon 1, a force along the traveling direction P is applied to the metal ribbon 1 by a contact.

That is, as shown in FIG. 2, each rotating body has a large number of brush bristles 5 acting as contacts arranged in a plurality of rows in the axial direction along the circumferential direction of the rotating shaft 4. A gap 6 is formed between the brush bristles 5. This gap 6
In a state where the brush bristles 5 of the adjacent rotating body are inserted,
That is, the contacts of the adjacent rotating bodies are arranged so as to overlap in the axial direction of the rotating body. Therefore, the continuity of the contact surface formed by the brush bristles 5 can be obtained, so that the guideability of the running of the metal ribbon 1 is improved.

When the brush bristles 5 come into rotational contact with one surface of the metal ribbon 1, a conveying force in the traveling direction P is applied to the metal ribbon 1. At this time, for example, when the tip of the metal ribbon 1 tries to bend along the outer peripheral surface of the rotating brush bristles 5, a force in the opposite direction is applied to the metal ribbon 1 by the brush bristles 5 of the succeeding rotating body 2b. , The metal ribbon 1 is returned to the regular transport path.

Further, the brush bristles 5 come into contact with the surface of the metal ribbon 1 while bending at a peripheral speed higher than the speed of the traveling metal ribbon 1. For this reason, an appropriate tension is applied to the traveling metal ribbon 1 to prevent the metal ribbon 1 from flapping or meandering.

The metal ribbon 1 is sandwiched between the rotating brush bristles 5 of the rotating bodies 2a, 2b, 3a, 3b on both sides.
When traveling, even if a break occurs in the running metal ribbon 1, the conveying force of the rotating bodies 2a, 2b, 3a, 3b is transmitted to the broken portion of the metal ribbon 1, The metal ribbon 1 can be transported and wound up without interruption.

When a large number of rotators 2a, 2b, 3a, 3b are arranged along both sides of the conveying path with respect to both surfaces of the metal ribbon 1, the metal ribbon 1 becomes lower rotators 2a, 2b and upper rotators 3a, 3b. , The traveling state becomes stable. This is the operation exhibited by the transport method and the transport apparatus.

In addition, when a driving rotating body having a large number of contacts such as brush bristles is arranged around the winding drum, the thin metal strip travels in contact with the peripheral surface of the winding drum, and the surroundings of the winding drum are reliably secured. Is wound. Therefore, the winding operation can be reliably performed even with a metal ribbon fed at a high speed. This is the operation exhibited by the winding method and device described in the first and second inventions.

As described above, the driving rotating body is disposed so as to be able to advance and retreat with respect to the winding drum, so that the driving rotating body contacts with the contact of the rotating body in accordance with the set value of the thickness of the metal ribbon or the winding amount (thickness). The contact pressure with the metal ribbon can be maintained at an appropriate level. This is the operation exhibited by the winding device according to the third invention.

Further, in addition to the conveying path and the winding drum, a plurality of drive rotors having contacts are also arranged along the peripheral surface of the cooling drum from the downstream side of the casting provided on the peripheral surface of the cooling drum, If the metal ribbon is pressed against the peripheral surface of the cooling drum by the body contact, the contact angle of the metal ribbon with respect to the cooling drum can be stably maintained. In this case, there is no need to provide a gas supply arrangement as in the case where the metal ribbon is brought into contact with the cooling drum by blowing the compressed gas, and the casting atmosphere can be easily controlled. This is the operation exhibited by the transport and take-up device according to the fourth invention.

It should be noted that, as the contact of the driving rotating body having the contact used in the present invention, a brush-like or a strip-like contact is generally used. Those formed of a soft material such as rubber or resin can also be used. For the material and shape of the contact, conditions that do not degrade the quality of the metal ribbon are set in accordance with the material and temperature of the metal ribbon.

〔Example〕

FIG. 3 shows a single-drum continuous casting facility incorporating a transport device and a winding device according to the present invention. In addition,
The transfer device and the winding device may be used independently. For example, as the winding device, the above-described magnetic attraction system, mechanical gripping system, reduced pressure attraction system, or the like may be employed, and the present invention may be applied to transport to a cooling drum.
Further, the present invention is naturally applied to a continuous casting facility for casting a metal ribbon by a twin drum system instead of the single drum system.

In a continuous casting facility for casting a metal strip of this type, a molten metal 7 to be cast is accommodated in an intermediate container 8,
A predetermined temperature is maintained by a heater 9 such as a high-frequency coil.
A pouring nozzle 10 is provided at a lower portion of the intermediate container 8,
An opening for introducing the inert gas 11 for pressurization is formed in the upper part. Pouring nozzle 10 faces the peripheral surface of cooling drum 12. By adjusting the blowing amount of the inert gas 11, the internal pressure of the intermediate container 8 is kept constant, and the flow rate of the molten metal 7 flowing out of the pouring nozzle 10 can be controlled.

The molten metal 7 flowing down on the peripheral surface of the cooling drum 12 is quenched and solidified through the cooling drum 12 as described above, and solidifies into a metal ribbon 1 while contacting the peripheral surface of the cooling drum 12 rotating at high speed. The metal ribbon 1 travels, peels off from the cooling drum 12 within a certain angle range, and is sent to the transport path.
The position at which the metal ribbon 1 peels off from the peripheral surface of the cooling drum 12 varies depending on the composition of the metal ribbon 1, the material of the cooling drum 12, the rotating conditions, the temperature, the atmospheric gas, and the like. So, the cooling drum
In order to keep the contact angle of the metal strip 1 on the 12 circumferential surface constant,
In this embodiment, the cooling drum downstream of the casting position
The presser pad 13 is made to face the peripheral surface of 12. The press pad 13 includes a pipe portion 14 having a shape corresponding to the peripheral surface of the cooling drum 12 as shown in the drawing, and a number of gas ejection ports 15 are formed on the side facing the peripheral surface of the cooling drum 12. I have. The gas 17 sent from the gas supply port 16 is blown onto the surface of the metal ribbon 1 from the gas outlet 15 via the pipe portion 14. As a result, the metal ribbon 1 is pressed against the peripheral surface of the cooling drum 12, and the contact state between the peripheral surface of the cooling drum 12 and the metal ribbon 1 can be kept constant in a range where the holding pad 13 is provided. .

At the downstream end of the holding pad 13, the driving rotator 2a having the above-described brush bristles planted therein is arranged. When the peripheral speed of the brush bristles 5 of the driving rotator 2a is maintained at a speed equal to or higher than the traveling speed of the metal ribbon 1, a force along the traveling direction P of the metal ribbon 1 acts on the surface side of the metal ribbon 1. In the illustrated example, a nozzle 18 for spraying a stripping gas is opposed between the metal ribbon 1 and the peripheral surface of the cooling drum 12. Peeling is performed stably.

The metal ribbon 1 peeled off from the peripheral surface of the cooling drum 12 is driven by rotating brushes 2a, 2b, 3a, 3b,
…… progress between. These rotating bodies 2a, 2b, 3a, 3b, ...
Are individually or divided into appropriate blocks, and are connected to the transmission shaft of the driving device, and the rotating bodies 2a, 2b, 3a, 3b,
The rotation is controlled such that the peripheral speed of the brush bristles 5 is slightly higher than the traveling speed of the metal ribbon 1. Here, the distance between the upper rotating body 3a in the vicinity of the cooling drum 12 of the upper rotating body and the transport path of the metal ribbon 1 is set to be slightly larger than the distance between the succeeding rotating body 3b and the transport path. By doing
The leading end of the metal ribbon 1 can be guided over a wide range and can be introduced into a regular transport path. That is, the cooling drum 12
Even if there is some flapping in the metal ribbon 1 sent out of the apparatus, the flapping can be absorbed and the metal ribbon 1 can be guided between the upper rotating body and the lower rotating body.

After being fed between the lower rotating bodies 2a and 2b and the upper rotating bodies 3a and 3b, the metal ribbon 1 travels on the transport path L while being sandwiched by the upper and lower rotating bodies. At this time, the force in the running direction P applied to the metal ribbon 1 is generated by the bending of the brush bristles 5, and thus becomes an appropriate force. As a result, a stable tension is applied to the metal ribbon 1, and a running state without flapping or meandering is obtained. In addition, since no excessive force is generated in the metal ribbon 1, slippage between the peripheral surface of the cooling drum 12 and the metal ribbon 1 and, consequently, no adverse effect on the casting area are caused.

A winding drum 19 is arranged downstream of the transport path L. Around the winding drum 19, the above-described rotating body
The driving rotator 20 having contacts similar to 2a, 2b, 3a, 3b,...
a, 20b, 20c,... are arranged in a large number in the circumferential direction so that the contacts of the adjacent rotating bodies overlap each other in the axial direction. By arranging a large number of rotating bodies 20a, 20b, 20c,... Along the peripheral surface of the winding drum 19 in this manner, the metal ribbon 1 to be moved straight is Along the orbit. At this time, the pressing force of the metal ribbon 1 against the winding drum 19 is obtained by the bending of the brush bristles 5. That is, regardless of the material of the metal ribbon 1, the close contact state of the metal ribbon 1 with the winding drum 19 is maintained by physical force.

Rotating bodies 20a, 20b, 20c,... Acting on the winding of the metal ribbon 1.
Are arranged on the peripheral surface of the winding drum 19 in a range of usually 0.75 × l or more, where the length of the entire circumference of the winding drum 19 is 1. As the arrangement range of the rotating bodies 20a, 20b, 20c,... Becomes closer to the entire circumferential length of the winding drum 19, the action of bringing the metal ribbon 1 into close contact with the circumferential surface of the winding drum 19 becomes more reliable. However, when the rotators 20a, 20b, 20c,... Are arranged on the entire circumference of the winding drum 19, a small-diameter rotator is disposed at a portion where the metal ribbon 1 constituting the next layer is fed. Although it is conceivable to use a guide plate, there is a limit, so in this embodiment, a guide plate 21 is arranged in this portion, and a pressing gas is blown out from the surface of the guide plate 21 facing the metal ribbon, so that the guide plate 21 And the winding drum 19 guide the thin metal ribbon 1.

At the stage of reaching the guide plate 21, the metal ribbon 1 is pressed against the winding drum 19 by the rotating bodies 20a, 20b, 20c,. Further, the metal ribbon 1 immediately after leaving the guide plate 21 is pressed against the winding drum 19 at the portion of the metal ribbon 1 laminated thereon. Therefore, when the rotators 20a, 20b, 20c,... Are arranged on the peripheral surface of the winding drum 19 in a range of 0.75 × l or more, the metal ribbon 1 is removed from the peripheral surface of the winding drum 19 facing the guide plate 21. Can be smoothly wound on the winding drum 19 without separation.

In this way, while applying a constant tension, the metal ribbon 1 is transferred from the cooling drum 12 to the winding drum 19 via the conveying path L.
And the metal ribbon 1 is wound around the winding drum 19. For this reason, the metal ribbon 1 is wound around the winding drum 19 in a state in which both edges are aligned without generating flapping or meandering in the running metal ribbon 1.

As the metal ribbon 1 is wound, the effective diameter of the winding drum 19 increases. Therefore, it is effective to incorporate a mechanism for retracting each of the rotating bodies 20a, 20b, 20c,... From the center of the winding drum 19 in response to the increase in the effective diameter. For this purpose, a support arm for forward and backward movement is attached to each of the rotating bodies 20a, 20b, 20c,..., And while detecting the layer thickness of the metal ribbon 1 wound around the winding drum 19, the thickness is adjusted to this layer thickness. A method of expanding and contracting the support arm based on the above can be adopted. Alternatively, as shown in the figure, the rotating bodies 20a, 20b, 20c,.
May be divided into a plurality of blocks, the rotating body of each block may be connected by a beam 22, and a support arm 23 connected to a forward / backward drive source (not shown) may be connected to the beam 22. In this case, one driving source is used to drive a plurality of rotating bodies 20a, 20b, 20c,.
Can be moved forward and backward, so that the equipment configuration is simplified.

Also, in FIG. 3, the metal pad 1 is
Is pressed against the peripheral surface of the cooling drum 12. However, instead of the press pad 13, it is also possible to arrange a plurality of driving rotators having a large number of contacts along the peripheral surface of the cooling drum 12 as described above. In this case, it is necessary to rotate the driving rotator at a speed synchronous with or higher than the traveling speed of the metal ribbon 1. In this case, it is not necessary to use a compressed gas for holding the metal ribbon 1, so that it is easy to dispose it in a closed chamber and control the atmosphere. Therefore, equipment used for casting a metal ribbon from molten steel containing a large amount of easily oxidizable elements can be easily constructed.

[Effects of the Invention] As described above, in the present invention, the rotating bodies are arranged in a plurality of rows on the conveyance path of the thin metal ribbon such that the contacts of the adjacent driving rotating bodies overlap with each other in the axial direction. This stabilizes the running state of the metal ribbon in the transport path, and prevents flapping and meandering. Moreover, even if the metal ribbon breaks in the middle, the tip of the metal ribbon after being broken is conveyed downstream by the rotating body without any trouble. Therefore, the winding of the metal ribbon is easily and reliably performed.

In addition, the drive rotor having contacts arranged in a plurality of rows in the circumferential direction along the peripheral surface of the winding drum ensures the state of close contact of the metal ribbon with the winding drum and ensures stable winding work. I do. In this manner, the metal ribbon is wound around the winding drum with both edges aligned,
In this state, it can be conveyed to the next process, and the productivity of high-speed casting such as a single-drum system or a twin-drum system is improved.

Furthermore, when a driving rotating body having a contact is arranged around the cooling drum and the metal ribbon cast by the rotating body is pressed against the peripheral surface of the cooling drum, unlike the case of the press pad using compressed gas, In addition, it is possible to run a thin metal strip that does not affect the atmosphere. Therefore, it is possible to easily realize an equipment configuration for arranging the entire equipment in a closed chamber and performing casting under a protective atmosphere.

[Brief description of the drawings]

FIG. 1 shows the state of contact between a metal ribbon and a contact of a rotating body for explaining the operation of the present invention, FIG. 2 shows the relationship between adjacent rotating bodies, and FIG. An embodiment applied to a drum type continuous casting facility is shown. 1: Metal ribbon, 2a, 2b: Lower rotating body 3a, 3b: Upper rotating body, 4: Rotating shaft 5: Brush hair, 6: Gap 7: Molten metal, 8: Intermediate container 9: Heater, 10: Note Hot water nozzle 11: Inert gas, 12: Cooling drum 13: Holding pad, 14: Pipe 15: Gas outlet, 16: Gas supply port 17: Gas, 18: Nozzle 19: Winding drum, 20a ~ 20c: Rotation Body 21: Guide plate, 22: Beam 23: Support arm P: Travel direction, L: Transport path

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuhiko Fukuya 1-1-1, Edamitsu, Yawatahigashi-ku, Kitakyushu-shi, Fukuoka Pref. (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B22D 11/06 390 B21C 47/02

Claims (4)

(57) [Claims] 1. A drive rotating body having contacts around the winding drum of a metal ribbon is arranged in a plurality of rows along the circumferential direction of the winding drum, and the contacts of the adjacent rotating body are arranged in a plurality of rows. It is arranged so as to overlap in the axial direction of the rotating body, the peripheral speed of the contact is set to be equal to or higher than the traveling speed of the metal ribbon, and the contact is brought into rotational contact with the metal ribbon to guide and wind the metal ribbon. A method for winding a metal ribbon. 2. A plurality of driving rotators having contacts arranged in an axial direction on a peripheral surface of a winding drum for winding a metal ribbon, and a plurality of driving rotators arranged adjacent to each other are arranged on the rotating rotator. A metal ribbon winding device arranged so as to overlap with each other in the axial direction. 3. A winding device for a thin metal ribbon, wherein the driving rotary body according to claim 2 is arranged to be able to advance and retreat with respect to a winding drum. 4. A peripheral surface on a downstream side of a casting position of a cooling drum for producing a metal ribbon by quenching and solidifying a molten metal, a conveying path of the metal ribbon extending from the cooling drum to a winding drum, and Along the outer circumference of the winding drum,
A plurality of driving rotators having contacts are arranged, and each contact of an adjacent rotator is arranged so as to overlap in the axial direction of the rotator, and the conveyance of the metal ribbon is performed. And winding device.